Friday, November 19, 2010

To InterrogateWhen E:EE is displayed switch unit off and press the temp up and temp down buttons simultaneously for 3 seconds.To Return to Normal OperationPress Temp Up and Temp Down Buttons together for 3 seconds.To Initiate Test OperationSwitch Unit Off & Press Master & Fan Buttons together for 3 seconds.Press Start/Stop to Initiate.Changing the Sensor PositionThe unit can sense the air temperature at the unit or controller Turn Unit Off To change press THERMOSENSOR button for 5 seconds to unlockToggle the THERMOSENSOR button & controller is displayed Set to desired setting (unit or controller)Press THERMOSENSOR button for 5 seconds to lockTwo Handsets/1 Unit - set on RC DIP SWsSingle handset DIP SW1 is On & 2 is OffDual Handset Master Both On & Slave both OffGroup Control up to 16 Unit from 1 RC HandsetSet DIP SW3 on RC to ONSet Each ID Unit Rotary SW to Unit Address (0-15) in seriesAuto Restart on Power FailureDIP SW2-3 on ID Unit. Off is autorestart (std)/On is manual RestartAuto ChangeoverDIP SW5 on RC. On is autochangeover (std)/Off is ManualMemory Retention on Power FailureDip SW6 on RC. On is Memory/Off is no memory

We recommend external pumps have their own power supply.Taking Power for a pump from the unit is a major source of Errors (CLIMATE CENTRE)

Pipework• Pipe sizes and lengths should be as the relevant Technical Guide• Both lines should be insulated• No line accessories or oil traps should be fitted• In cooling mode both pipes should be between 0 and 10C - the suction line should sweat, but not freeze• In heating moded both pipes should be between 30 an 60C• Pipework should be refrigeration quality• Refrigerant should be R22, unless stated on the outdoor unit• Look for restrictions. They could cause compressor failures.Outdoor Unit• Discharge temperature should be between 50 & 70C• Suction temperature should be between -3 & 4C• If fan switches off check for high discharge temperature• Check Suction Line is sweating – problem if not!• Hot Recip. Compressor = PROBLEM!• Sweating/Frost on expansion line – underchargedIndoor Unit• Is it level? Have we adequate drainage?• Smells are always due to site conditions or drains• Flashing lights? = Fault Diagnostics - see over• When were the filters last cleaned?• Is the unit too large/small (between 5/20 air circs / hr)• Is it on Timer/Test ModeController• EE:EE on LCD handset - fault diagnostics - see over• Is the handset too far away?• When were the batteries changed last?• Heat Pump models 7-14 – NOT auto changeover• Timer is one shot, unless it has ‘repeat’ mode• With wired handset, check for interference. Cable should be screened• Is it on Timer/Test ModeWiring• In general interconnecting wiring is 240 Volt, but see chart for details• With LCD wired handset models, Terminal 3 is the Live Not Terminal 1NEVER apply mains voltage to Terminal 1 on these models• With LCD wired handset models wiring should be screened• Check Voltage drops! Check it isn’t down to Earth!• Has it got a timeclock/BMS interface?• Interconnecting cables MUST be circular crimped

What the separate Wires do in the interconnecting CablesNote – Wires are 240V Live except where marked neutral or Earth or signalCables marked Signal are digital pulses and you should not attempt to measure these with a meter.

Wired Controllers - Fault diagnosticsA Fault Condition is signalled by EE:EE appearing on the LCD panel.The unit should be interrogated by switching it off on the handset thenpressing either the down arrows on the SET TIME and TEMP/DAY buttonstogether for 3 seconds for 7 day models or the ENERGY SAVE & ZONECONTROL buttons for other models.The Failure code is in 2 parts - Fault and Address.The Fault Code is an E code. The second is the unit address for multilinked systems - with single units this is always 00. 7 day models have thefault code as shown in the table below above the address.Other models have the codes below, minus the 0, followed by the address- e.g. E9:00 denoting Float Switch on Unit 0.

Outdoor Unit withA fault condition is signified by flashing red LED’s on the the outdoor PCBif it is equipped with one. Except for multisplits and 2 LED models, thediagnostics are shown in the table on the right.For 2 LED models flashing signifies sensor failure and constantly litindicates high discharge temperature.